Hi Punny,
A lot of people have said some very insightful things. I think over the course of the thread it's become pretty clear that you don't have much of a problem with the sexual aspect, but rather the emotional ramification of the sexual relationship.
I think you should be direct with your s/o and just tell him. "I am willing to indulge in your fantasies happily, but in order for it to work for me there are some things I need in return." At that point, you can stipulate what he can do to make you feel loved and valuable. Maybe you need proportionate alone time with him, or extra-focused attention on you sexually. It sounds like you are afraid that he doesn't love you for being you.
I am sure that he does love you for being the interesting and kinky girl that you are - all of you. (And may I say, based on your pics, the unbelievably smokin' body that makes me sweat all of you.) But he doesn't express it in a way that is meaningful. Tell him directly what he needs to do, and I am sure he will step up to the plate. I mean - who wouldn't do just about anything to keep such an understanding and hot gf? Really!
You should only think about leaving if he disregards your needs after they have been clearly stated. If he doesn't bend over backwards to let you know that YOU (mind, body, history) are the person that really pushes his buttons (emotionally and sexually) then he deserves to be kicked to the curb.
